How important is Cartridge Overhang? Need help


Just received a Mint protractor for my Pro-ject 2 Xperience. I started the processes of setting the Overhang and it seems that my Ortofon HMC 20 can't achieve the proper overhang. The cartridge is maxed out to the front of the head shell and the result I get is: at the outside of the arc it sits perfectly and on the inside it sits behind the arc. I guess my question is this how important is overhang and if it is important is there a good compromise.Should I just get as close as I can and worry more about alignment?
128x128wilson667
That write up from John assumes the arc is in the correct position. You can't just flop down an arc on the table any where.

Again, very important, I'm assuming the arm is set to the correct P2S.

Look at John's drawing, keep in mind the cartridge is all the way forward. From the OP's description it seems that the cartridge is hitting point C. However, the cart is already too far forward.

Now move the arc back until the stylus at point C is on the line. Where did the stylus move to in relation to the arc on the outside? Does it not end up to the left of the arc?
Many of us who use the MintLp protractor on a regular basis have found an easy check of the arc position on the table. First, start with the cartridge in the middle of the slots. Then, with the arm lifted on the queue, gently swing the arm across above the arc. You should be able to see if you are in the ballpark or not. If not, move the protractor until it looks like the arm is tracing the arc. Now you should be reasonably close and you can begin adjusting the cart with the stylus down on the protractor.
sorry I haven't been on in a bit . Dan_ed you are exactly right if the Mint had a C point that is where the stylus is landing and if you move the protractor so it lands on the arc near C then at A it is to the left of the arc.I have been talking with Yip at Mint and we have come to the conclusion that the Ortofon HMC 20 cartridge only has a Mounting Hole to Stylus Tip of 8.5mm instead of the standard 9.5mm. That looks to be the amount of adjustment missing. Since it looks like I may have to replace the cartridge does anyone have any suggestions on a sub $500.00 cart. with a known longer MHST measurement.Ortofon would be preferred just because of the trade in, but it is not a must
Hi, Wilson667: A difference of only 1.0mm should not prohibit you from adjusting the position of the cartridge in the 9cc tone arm headshell to align to the Lofgren A/Baerwald geometry. The headshell slots have enough play forward and backward from the middle position, which accomodates most cartridges with typical mounting hole to stylus distances of +/- 9.5mm, to easily accomodate your HMC 20.

Something doesn't sound right. Before spending money on another cartridge, try using the Conrad Hoffman protractor, which works very well for the Pro-Ject tone arms. Download from the link, unzip, print, and follow directions in the README file.

http://www.conradhoffman.com/TemplateGen.zip

Tom
Wilson667,

When you moved the protractor back to get the stylus to land to the left, could you then move the cart back in the slots toward the line? If not, I suspect that the arm is not mounted exactly at the P2S distance. However, the distance between the stylus and the line will give you an idea of how much the arm pivot is off. I remember the Pro-ject arm I had on an MMF-7 a while back, but don't remember how much play there is in the three set screws that hold VTA. Maybe it is possible to play with this and get the P2S correct? Can you measure carefully what the P2S distance is now?

Granted, a short hole-to-tip makes life a bit difficult but if things are set correctly and your arm has slots for mounting the cartridge it should work. There is no standard for the hole-to-tip distance. That is why most arms have those headshell slots.